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试验证明,在丘陵岗地培育杉木大径材是可能的.根据丘陵岗地土层瘠薄、土壤粘重板结的特点,除坚持高标准造林外,必须采取一些专门的有效的措施,例如:1.适地适树.选择丘陵岗地一类土壤作培育大径材基地.2.加强土壤管理.方法是扩槽、换土、施肥以及坚持每年全面“切山”松土,以改良理化性质,增肥蓄水,促进根系生长.3.合理间伐.当杉木林开始郁闭之后,酌情进行二、三次下层抚育间伐,为培育大径材提供条件.4.实行扩槽机械化,以发挥丘陵岗地可机耕的有利条件,提高工效,减轻劳动强度.
The experiment proves that it is possible to cultivate the large diameter timber of Chinese fir in the hilly land.According to the characteristics of the barren soil and the sticky and compacted soil in the hilly land, some special and effective measures must be taken in addition to the high standards of afforestation, for example: Choose a hilly type of soil for cultivation of large-diameter timber base .2 strengthen soil management .Operation is to expand the groove, soil replacement, fertilization and adhere to the annual comprehensive “cut mountain ” loose soil to improve the physical and chemical properties, increase Fertilizer storage, and promote root growth.3 reasonable thinning.When the Chinese fir forest began to close, as appropriate, the second and third tending thinning, to cultivate large-diameter timber to provide the conditions for the implementation of expansion mechanization in order to play hilly land Advantageous conditions of plowing, improve work efficiency, reduce labor intensity.